diff options
| author | Max Krummenacher <max.krummenacher@toradex.com> | 2022-05-06 16:24:05 +0300 |
|---|---|---|
| committer | Shawn Guo <shawnguo@kernel.org> | 2022-05-07 04:53:09 +0300 |
| commit | 5516144425e413f0efe92b249142b4db15ff7ec5 (patch) | |
| tree | c9a1f836dff43786b4e1b97ad64d60b8fba2c00c /arch/arm/boot | |
| parent | 3f781d5c67f7f5763913cccb972598df19f80c06 (diff) | |
| download | linux-5516144425e413f0efe92b249142b4db15ff7ec5.tar.xz | |
ARM: dts: imx6ull-colibri: change touch i2c parameters
Switch on 22 kOhm pull-ups and lower the I2C frequency to around 40 kHz
to get more reliable communication.
Signed-off-by: Max Krummenacher <max.krummenacher@toradex.com>
Signed-off-by: Denys Drozdov <denys.drozdov@toradex.com>
Signed-off-by: Marcel Ziswiler <marcel.ziswiler@toradex.com>
Signed-off-by: Shawn Guo <shawnguo@kernel.org>
Diffstat (limited to 'arch/arm/boot')
| -rw-r--r-- | arch/arm/boot/dts/imx6ull-colibri.dtsi | 10 |
1 files changed, 6 insertions, 4 deletions
diff --git a/arch/arm/boot/dts/imx6ull-colibri.dtsi b/arch/arm/boot/dts/imx6ull-colibri.dtsi index 84bb7574d211..dc947035495b 100644 --- a/arch/arm/boot/dts/imx6ull-colibri.dtsi +++ b/arch/arm/boot/dts/imx6ull-colibri.dtsi @@ -114,6 +114,8 @@ }; &i2c2 { + /* Use low frequency to compensate for the high pull-up values. */ + clock-frequency = <40000>; pinctrl-names = "default", "gpio"; pinctrl-0 = <&pinctrl_i2c2>; pinctrl-1 = <&pinctrl_i2c2_gpio>; @@ -405,15 +407,15 @@ pinctrl_i2c2: i2c2-grp { fsl,pins = < - MX6UL_PAD_UART5_TX_DATA__I2C2_SCL 0x4001b8b0 - MX6UL_PAD_UART5_RX_DATA__I2C2_SDA 0x4001b8b0 + MX6UL_PAD_UART5_TX_DATA__I2C2_SCL 0x4001f8b0 + MX6UL_PAD_UART5_RX_DATA__I2C2_SDA 0x4001f8b0 >; }; pinctrl_i2c2_gpio: i2c2-gpio-grp { fsl,pins = < - MX6UL_PAD_UART5_TX_DATA__GPIO1_IO30 0x4001b8b0 - MX6UL_PAD_UART5_RX_DATA__GPIO1_IO31 0x4001b8b0 + MX6UL_PAD_UART5_TX_DATA__GPIO1_IO30 0x4001f8b0 + MX6UL_PAD_UART5_RX_DATA__GPIO1_IO31 0x4001f8b0 >; }; |